中國有色金屬學報(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 13 No. 5 October 2003 |
transition metals in solvent metal
（1. Institute of Hydrogen Storage Materials,
Shanghai University, Shanghai 200072, China;
2. Department of Mechanical, Automotive and Materials Engineering, University of Windsor, Windsor, Ont., Canada N9B 3P4）
Abstract:It is important to know the maximum solid solubility(Cmax) of various transition metals in a metal when one designs multi-component alloys. There have been several semi-empirical approaches to qualitatively predict the Cmax, such as Darken-Gurry(D-G) theorem, Miedema-Chelikowsky(M-C) theorem, electron concentration rule and the bond-parameter rule. However, they are not particularly valid for the prediction of Cmax. It was developed on the basis of energetics of alloys as a new method to predict Cmax of different transition metals in metal Ti, which can be described as a semi-empirical equation using the atomic parameters, ie, electronegativity difference, atomic diameter and electron concentration. It shows that the present method can be used to explain and deduce D-G theorem, M-C theorem and electron concentration rule.
Key words: maximum solid solubility; function Zf; prediction method; electronegativity difference; atomic size factor; electron concentration
